1 lightning, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Denver/Boulder, CO wrote its last area forecast discussion before the first event at May 30, 1:22 PM MST, 8 hours 53 minutes earlier.
NORTHEAST AND NORTH CENTRAL COLORADO AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER COLORADO 222 PM MDT WED MAY 30 2001 SHORT TERM DISCUSSION: COLORADO WILL REMAIN UNDER MOD NORTHWESTERLY FLOW ALOFT TONIGHT AS STRONG UPPER RIDGE CENTERED OFF THE COAST OF CALIFORNIA HOLDS STEADY AND STRONG AND MOIST SHORT WAVE OVR NE/KAN SLOWLY TREKS EAST. 110KT JET CORE ROUNDING TOP OF RIDGE IN CANADA WITH LEADING EDGE OF STRONGER WINDS ALOFT MOVING SOUTHEASTWARD INTO NRN WYO TONIGHT. THIS MORNINGS SURGE OF COOL AIR AT THE SFC HAVING A STABILIZING AFFECT ON THE NORTHEAST PLAINS DESPITE SOME UPPER LVL LIFT ASSOC WITH SOME VORTICITY IN THE MID LVL FLOW. DAYTIME HEATING FIRING STORMS IN THE HIGH COUNTRY AND NEAR THE FRONT RANGE SO WILL KEEP HACE SCATTERED CHANCE FOR STORMS HIGH COUNTRY WITH ISOLATED STORMS ON THE PLAINS. THE DRY FORECAST FOR THURS AND THURS EVE LOOKS GOOD BEHIND TODAYS TROUGH ON THE CENTRAL PLAINS AND BUILDING RIDGE OUT WEST. FORECAST SOUNDINGS INDICATE MID LVL STABILITY AND WITH FORECAST HIGHS IN THE MID TO UPPER 70S...CAPE VALUES TRANSLATE TO MOSTLY UNDER 500 J/KG. IN ADDITION...NRN COLORADO UNDER RIGHT EXIT RGN OF JET WITH BEST LIFT WELL OVR DAKOTAS AND MINN. SFC WINDS MAINTAIN A NORTHWESTRLY COMP ALL DAY AND DRYING TREND THROUGHOUT ATMOSPHERE ASSOCIATED WITH APPROACHING RIDGE. FOR FRIDAY...A SFC COOL FRONT ENTERS NE COLO AROUND LATE MORNING. AVN INDICATES STRONGER NORTHEAST WINDS AND MORE MOISTURE WITH ETA MUCH DRYER AND LESS OF A WINDS SHIFT. ALL MDLS HAVE SHARP DRY RIDGE BUILDING OVR GREAT BASIN UP INTO CANADA WITH THE AXIS OVER COLO AROUND 12Z SAT. LONG TERM DISCUSSION: LEE TROUGH SETS UP SATURDAY WITH WARM AND STABLE WEST TO SOUTHWESTERLY FLOW OVER THE STATE. THIS SHD KEEP A WESTERLY COMPONENT TO THE SFC WINDS AS WELL AND DRY CONDITIONS LIKELY. EARLY SUNDAY...ANOTHER UPPER LVL TROF ENTERS NRN ROCKIES WITH SFC SURGE AND HIGHER RH. WITH MOD WESTERLY FLOW COULD BE STABLE BEHIND TROF AXIS BUT WILL ENTER CHANCE FOR TSTORMS. FOR MONDAY...AVN HOLD HIGHER RHS WITH NE FLOW AND PERHAPS EVEN A DAY 2 SCENARIO SO WILL KEEP CHANCE FOR AFTERNOON STORMS IN PLACE. TUESDAY AND WEDNESDAY LOOKS DRY AS RIDGE REBUILDS AND ANOTHER LEE TROF SETS UP. FREDIN .DEN...NONE.
The national radar mosaic for the moment the first event began.
1 lightning. Local standard time, as filed.
Lightning ignited a fire which destroyed a luxury home on Bear Mountain near Evergreen.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2001Every state in 2001This day in weather historyWarnings in Colorado, May 2001
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5250234.